Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

Brown University - Algae
Catalog #: ABRU00003570
I. Holden s.n. 29 August 1901
Polysiphonia harveyi Bailey
United States, Connecticut, Charles Island, near Milford, CT

Field Museum of Natural History
Catalog #: C0512737F
I. Holden #s.n. 29 August 1901
Polysiphonia harveyi Bailey
United States, Connecticut, New Haven, Charles Island near Milford

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00221056
28185191-dd04-4bec-a826-2ed74a60c06f
I. Holden #s.n. 29 August 1901
Polysiphonia harveyi Bailey
United States, Connecticut, Charles Island, near Milford, CT

Yale University Herbarium
Catalog #: YU.091971
Isaac Holden s.n. 29 August 1901
Polysiphonia harveyi Bailey
United States, Connecticut, New Haven, Milford; Charles Island, Milford, CT

Rutgers University, Chrysler Herbarium - Macroalgae Collection
Catalog #: CHRB0017004
Isaac Holden #1534 29 August 1901
Melanothamnus harveyi (Bailey) Díaz-Tapia & Maggs, 2017
United States, Connecticut, New Haven, Charles Island near Milford

University of Michigan
Catalog #: 664049
Isaac Holden #s.n. 29 August 1901
Melanothamnus harveyi (Bailey) Diaz-Tapia & Maggs
United States, Connecticut, Charles Island near Milford

University of Michigan
Catalog #: 664052
Isaac Holden #s.n. 29 August 1901
Melanothamnus harveyi (Bailey) Diaz-Tapia & Maggs
United States, Connecticut, Charles Island near Milford

Michigan State University Algae
Catalog #: MSC0184272
Isaac Holden #s.n. 29 August 1901
Polysiphonia harveyi Bailey
United States, Connecticut, New Haven, Charles Island near Milford

Miami University - Algae
Catalog #: 000187525
Isaac Holden #s.n. 29 August 1901
Polysiphonia harveyi Bailey
United States, Connecticut, Charles Island near Milford